Koki Holdings Co., Ltd.

Yuki Takahashi

Hideyuki Hashimoto

Yuta Noguchi

Hironori Mashiko

The purpose of the invention is to achieve a miniaturized power tool. Provided is a hammer drill (A) that includes: a brushless motor () that is a drive source for a tip tool (); a control unit for controlling the driving of the brushless motor (); a motor housing () to which the brushless motor () is attached; and a handle housing () provided with a grip (). The control unit includes: a switching board () and a Hall element board (); and a converter board () on which an electrolytic capacitor () is installed. The brushless motor () is disposed to be sandwiched between the electrolytic capacitor (), and the switching board () and the Hall element board (), along the axial direction (M) of a drive shaft () that drives the tip tool ().

Power tool

A drilling tool includes: a drive source; a bit attachment portion to which an end bit is attachable; a power transmission portion configured to apply a motive force to the end bit attached to the bit attachment portion; an operation portion switchable between an ON-state and an OFF-state by a manual operation and configured to receive a setting operation for setting a stop condition; and a controller configured to set the stop condition based on the setting operation, and to start driving of the drive source in response to a first switching operation for switching the operation portion from the OFF-state to the ON-state. In a state where the stop condition is set, even when the operation portion is in the ON-state, the controller stops driving of the drive source in response to the stop condition being met while the drive source is being driven.

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Hitachinaka, Japan

Yuki Takahashi